Metal-plate-bending machine.



METAL PLATE BENDING MACHINE; APPLICATION FILED JUNE 28, 1905.

'PATENTEYD OUT. 9, 1906.

3 SHEETSSHEET 1.

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APPLIGATION FILED JUNE 28, 1905.

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METAL PLATE BENDING MACHINE. APPLIUATION FILED JUNE 28,1905.

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PATENTED OCT. 9, 1906.

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WILLIAM WVATTIE, OF WORCESTER, MASSACHUSETTS, ASSIGNOR TO CROMPTON & KNOWLES LOOIWI WORKS, A CORPORATION OF MAS- SAGHUSETTS.

Specification of Letters Patent.

Patented Oct. 9, 1906.

Application filed June 28,1905. Serial No. 267,374.

To all whom, it nuty concern:

Be it known that LIVILLIAM WATTIE, a citizen of the United States, residing at VVorcester, in the county of Worcester andState of Massachusetts, have invented certain new and useful Improvements in Metal-Plate- Bending Machines, of which the following is a specification.

My invention relates to a metal-platebending machine, and more particularly to a machine for turning or bending over one edge of a metal plate, preferably a sheet-iron plate, which extends upon the upper surface of the wooden breast-beam of a loom.

The object of my invention is to provide a metal-plate-bending machine of a simple construction and operation, having therein rolls between which the plate is passed to bend over one edge thereof and furnish a curved or rounded edge on the top side of the plate along one edge.

My invention consists in certain novel features of construction of my improvements, as will be hereinafter fully described.

Referring to the drawings, Figure 1 is a side view of a machine embodying my improvements looking in the direction of arrow at, Fig. 2. Fig. 2 is a front end view of the machine looking in the direction of arrow b, Fig. 1. Fig. 3 is a plan view of the machine looking in the direction of arrow 0, Fig. 1. Fig. 4 is a vertical section through the rolls on line 4 4, Fig. 2, looking in the direction of arrow d, same figure. Fig. 5 is a central longitudinal vertical section through one of the upper rolls, showing its supporting-shaft. Fig. 6 is a detached view of one end of the first pair of rolls. Fig. 7 is a detached view of one end of the second pair of rolls, and Fig. 8 is an end view of a finished metal plate.

In the accompanying drawings, 1 is the bed of the machine, mounted on legs 2 and having stands 3 secured to one side thereof for the bearings 4 of the driven pulleyshaft 4, carrying a fast and loose belt-pulley 5 and 6, and for the bearings 7 of the intermediate shaft 7.

On the belt-pulley shaft 4 is fast a pinion 8, which meshes with and rotates a gear 9, fast on the intermediate shaft 7. Also fast on the shaft 7 is a pinion 10 of sufficient width (see Fig. 2) to mesh with and rotate the two gears 11 and 12, fast, respectively, on the shafts 13 and 14 of the lower rolls 15 and 16. The shafts 13 and 14 have fast on their ends the gears 17 and 18, which mesh with and rotate the gears 19 and 20, fast on the shafts 21 and 22 of the upper rolls 23 and 24.

The two pairs of rolls, each pair consisting of an upper and lower roll, have their supporting-shafts, on which they are fast, suitably mounted in adjustable bearings of ordinary construction on stands 25, secured to the bed of the machine.

Upon the upper side of the bed 1 of the machine are secured guide-plates 26 and 26 to guide the plate to be passed between the rolls and bent. One of said guide-plates, as 26, is adjustable relative to the other plate 26, according to the Width of the plate to be bent.

The pair of rolls 15 and 23, between which the plate 27 first passes to have its edge bent, are so shaped as to partially bend the edge of the plate, while the second pair of rolls-16 and 24 are so shaped as to finish bendi'ig or turning over the edge of the plate to make a curved or rounded edge, as shown in Fig. 8.

As the metal plates to be operated on are ordinarily of hard metal and considerable power is required to bend the edge and the rolls are liable to wear, I preferably make each roll in two parts, as shown in Fig. 5. The part 23, on which the wear principally comes, is preferably made of hardened tool-steel and is secured to the other part 23, preferably of chilled cast-iron, by screws 23 (see Fig. 5) or otherwise.

A nut 28 may be screwed 0n the roll-shaft to hold the roll in place. The roll is preferably splined on the shaft.

In case it is desired to vary the shape or the size of the bent or turned-over edge of the plate the rolls will be shaped accordingly.

Having thus described my invention, What I claim as new, and desire to secure by Letters Patent, is-

In a plate-bending machine, a driven shaft, a pinion on said shaft meshing with a gear on a second shaft, and said second shaft, and gear, and a pinion on said second shaft meshing with two gears on two roll-shafts,

and said two roll-shafts, a roll fast on each sh aft, and a gear fast on eachshaft and meshing with a gear fast on a second roll-shaft, anid two-second roll-shafts, and a roll fast on plate, and the second pair of rolls completing the bending, and means for supporting and guiding the plate.

WILLIAM WATTIE.

each shaft, forming two pairs of rolls suitably Witnesses: shaped for the plate to pass between, the first J. C. DEWEY, pair of rolls partially bending the edge of the 1 M. HAAS. 

